Rancho El Cajon

Rancho El Cajón was a 48,800-acre (197 km2) Mexican land grant in present day San Diego County, California, given in 1845 by Governor Pio Pico to María Antonia Estudillo de Pedrorena.

The grant encompassed present day El Cajon, Bostonia, Santee, Lakeside, Flinn Springs, and the eastern part of La Mesa.

Previously lands of the San Diego Mission, the eleven square league grant was received in 1845 by María Antonia Estudillo, wife of Miguel Pedrorena.

[3][4][5] With the cession of California to the United States following the Mexican–American War, the 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored.

[9] In 1868, Los Angeles land developer Isaac Lankershim bought the bulk of the Pedrorena's Rancho El Cajon holdings, employing Major Levi Chase, a former Union Army officer, as his agent.